How can I access the second argument in the list?

Question

I'm wondering how I can access second item in my list? What I mean is that the string outputs this :

07-17 21:15:38.723: D/MY APP(15806): {feeling=joyful}

But I only want it to read "joyful"

Here is my code:

public class FeelingsMain extends Activity {

private static final String TAG = "MY APP";

@Override
protected void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    setContentView(R.layout.activity_main);

    initList();
    ListView lv = (ListView) findViewById(R.id.pageLayout);
    // design the listview with the adapter
    SimpleAdapter simpleAdpt = new SimpleAdapter(this, feelingsList,
            android.R.layout.simple_list_item_1,
            new String[] { "feeling" }, new int[] { android.R.id.text1 });

    lv.setAdapter(simpleAdpt);

    lv.setOnItemClickListener(viewNeeds);

}

List<Map<String, String>> feelingsList = new ArrayList<Map<String, String>>();

private void initList() {
    // populate the feelingsList
    feelingsList.add(createFeeling("feeling", "wonderful"));
    feelingsList.add(createFeeling("feeling", "content"));
    feelingsList.add(createFeeling("feeling", "joyful"));
    feelingsList.add(createFeeling("feeling", "tired"));
    feelingsList.add(createFeeling("feeling", "gay"));
    feelingsList.add(createFeeling("feeling", "sad"));
    feelingsList.add(createFeeling("feeling", "amazing"));

}

private HashMap<String, String> createFeeling(String key, String name) {
    HashMap<String, String> feeling = new HashMap<String, String>();
    feeling.put(key, name);

    return feeling;

}

OnItemClickListener viewNeeds = new OnItemClickListener() {


    @Override
    public void onItemClick(AdapterView<?> arg0, View arg1, int arg2,
            long arg3) {
        // TODO Auto-generated method stub
        // create variable for database input
        String feeling = feelingsList.get(arg2).toString();
        Log.d(TAG, feeling);

        Intent gotoNeeds = new Intent(FeelingsMain.this, Needs.class);
        gotoNeeds.putExtra("aFeeling", feeling);
        startActivity(gotoNeeds);
    }

};

The string feeling which is equal to feelingsList is giving me the problem. Is there some method that allows me to access different parts of the array, the get method only seems to return both elements.

... You have a list of maps, and you're dumping the map at a given index. Dump the map value instead. Also, ew. — Dave Newton, Jul 25 '13 at 17:12
Not sure what you are doing by creating an `ArrayList` of `HashMaps`. — Vikram, Jul 25 '13 at 17:17
Neither do I, I've only been doing this for a few weeks stumbling around in the dark, gimme a break. — user2557294, Jul 25 '13 at 17:42

score 1 · Accepted Answer · edited May 23 '17 at 12:21

Look this link: Android - Get value from HashMap

Map<String, String> map = new HashMap<String, String>();
map.put("Color1","Red");
map.put("Color2","Blue");
map.put("Color3","Green");
map.put("Color4","White");

 System.out.println(map);
 // {Color4=White, Color3=Green, Color1=Red, Color2=Blue}        

  System.out.println(map.get("Color2")); // Blue

 System.out.println(map.keySet());
  // [Color4, Color3, Color1, Color2]

for (Map.Entry<String,String> entry : map.entrySet()) {
   System.out.printf("%s -> %s%n", entry.getKey(), entry.getValue());
}
// Color4 -> White

// Color3 -> Green // Color1 -> Red // Color2 -> Blue

The credit is for @polygenelubricants

score 0 · Answer 2 · answered Jul 25 '13 at 17:23

@Tobiel and other guys are right: use HashMap.getValue(key) method to output the value. In your case it would be:

OnItemClickListener viewNeeds = new OnItemClickListener() {


@Override
public void onItemClick(AdapterView<?> arg0, View arg1, int arg2,
        long arg3) {
    // TODO Auto-generated method stub
    // create variable for database input
    String feeling = feelingsList.get(arg2).get("feeling").toString();  // <<- changes here
    Log.d(TAG, feeling);

    Intent gotoNeeds = new Intent(FeelingsMain.this, Needs.class);
    gotoNeeds.putExtra("aFeeling", feeling);
    startActivity(gotoNeeds);
}

};

How can I access the second argument in the list?

2 Answers2